RT Journal Article
T1 An Electrochemical Method for the Determination of Antioxidant Capacities Applied to Components of Spices and Condiments
A1 Rivas Romero, María Pilar
A1 Estévez Brito, Rafael
A1 Palma López, Alberto
A1 Ruiz Montoya, Mercedes
A1 Rodríguez Mellado, José Miguel
A1 Rodríguez Amaro, Rafael
AB The antioxidant activity of a set of 17 active principles present in foods is studied by using two sets of methods: i) spectrophotometric, DPPH radical scavenging method and CUPRAC assay; ii) electrochemical, using either a mercury electrode or a glassy carbon electrode covered with poly-neutral red and doped with Pt nanoparticles. The modified glassy carbon electrode assesses the scavenging activity of the antioxidants studied, improving the measurement time and easiness respect to the rest of the methods. Compared to Hg electrode, the measurements can be made in conditions close to the physiological conditions (pH 7 and aqueous medium). Using this sensor, antioxidants without activity in the DPPH radical scavenging assay can be studied. Finally, with respect to CUPRAC, the advantages of the modified electrode are the absence of organic solvent, with the consequent closeness to physiological conditions, and the lower measuring time involved. The sensitivity of this sensor is comparable with those shown by DPPH or CUPRAC.
PB The Electrochemical Society
SN 0013-4651
SN 1945-7111 (electrónico)
YR 2017
FD 2017-01-24
LK https://hdl.handle.net/10272/23352
UL https://hdl.handle.net/10272/23352
LA eng
NO Romero, M. P. R., Brito, R. E., Palma, A., Montoya, M. R., Mellado, J. M. R., & Rodríguez-Amaro, R. (2017). An Electrochemical Method for the Determination of Antioxidant Capacities Applied to Components of Spices and Condiments. In Journal of The Electrochemical Society (Vol. 164, Issue 4, pp. B97–B102). The Electrochemical Society. https://doi.org/10.1149/2.0231704jes
NO Funding from Córdoba University through “Ayudas puente para el desarrollo de proyectos de I+D precompetitivos XX Programa Propio 2016” is gratefully acknowledged.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026